The Antitampering Device,valve, cataloged under National Stock Number 4820-01-149-3444, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-149-3444 |
| Item Name | Antitampering Device,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL MESH SCREEN;FURNISHED WITH BAR AND LOCK |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 16816 | 3/2 Design control — primary reference U.S. Government activity |
| 16816-1.50IN | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-01-149-3444 is a Antitampering Device,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-149-3444: General Characteristics Item Description: STEEL MESH SCREEN;FURNISHED WITH BAR AND LOCK. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.